High-capacity friction shock-absorbing mechanism



G. LEWlS. HIGH CAPACITY mmm SHOCK HasoRalNG MEcHANlsM.

APPLICATION FILED )UNE 3| 191B. 1,303,338. Patented May13, 1919..

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GOODRICH Q. LEWIS, OF WASHINGTON, yDISTRICT OF COLUMBIA, ASSIGNORTOWILLIAM H. M INER, OF CHAZY, NEW YOR HIGH-CAPACITY FRICTIONSHOCK-ABSORBIN G MECHANISM.

Specification of Letters Patent Application med :une a, 191s. serial No.237.840.

T all wlw/1i it may concern.'

. Be it knownthat I, Goomncrr Q. Lewis, a. citizen of the United States,residing at Vashington, in the District ot' Columbia, United States" ot'America, have invented'a certain new and useful Improvement inHigh-Capacity Friction Shock-Absorbing Mechanisms, of which thefollowing is a full, clear, concise, and exact description, referencebeing had to the accompanying draw ings, forming a part of thisspecificatlon.

This invention relates to improvements in' high capacity friction shockmechanisms. g

The object of the inventionis to provide a frictional shock absorbingmechanism, more particularly designed for railway draft riggings andwhich is ot' exceedingly high capacity, the parts being compactlyarranged.

In the drawing forming a part of this specification, Figure 1 is a partside eleva` tional, part vertical, longitudinal section of a portion ota railway car showing my improvements applied thereto.

absorbing views taken on the lines 2-2 and 3 3, respectively, otFig. 1.

In said drawing, 1.010 denote channelshaped center or draft sills ot'usual form and spaced the standard distance apart, said sills havingsecured to their inner faces front stops 12 andA a rear abutment. blockor cast# ing 13 which extends from sill to sill and 1s secured to both.Said block 13 t'orms a rear stop or abutment for the gear, as will beunderstood. The draw bar 14 of the rigging is adapted to be operativelysecured to the shock abst-)rbing mechanism proper by a suitableV yokewhich, in the instance shown, comprises a pair oi horizontallool'i-shapcd yoke elements 15 and 15. Said horizontal yoke elements 15are arranged as clearly shown in Figs. 1 and 2, that is. one at theupper por. tion of the drat't gear and the otherat the lower portion andeach ot said yoke inembers 15 is provided at. its forward end with apair of wings 16 which overlap each other and the butt of the draw barand and are keyedto the latter, as by a coupler-key 17. Each of saidyoke members 15 is further provided with a transverse shoulder or gib 18adapted to cooperate with the usual shoulders ofthe draw bar butt. Afront follower 19 is employed with the draft rigging and the shockabsorbing mechanism And Figs. 2, and 3 are vertical, transverse,sectional of the shells 21 andv rear ends of 'the yoke are supported bya detachable saddle plate 20. eferring now morelparticularly to theshock absorbing mechanism proper, the same.

upper cylindrical portion 26 and a corresponding lower cylindricalportion 27 with horizontal flanges 2S-28 at the sides, said castingbeing open at the sides between said flanges 28 to permit insertion ofthe springs. As will be understood. the casting A has an integral rearWall 29.

The structure'of the casting A at the rear and 22 is so designed thatall of the springs may be introduced through the open sides and twosprings 3() and 31 are first introduced and arel seated in the springpockets provided by the cylindrical sections 26 and 27, respectively.Thereupon the remaining two springs 32 and 33 are introduced, one fromeach side. As clearly appears froni Fig. 3, with the arrangement shown,I am enabled to employ four of the usual standard springs employed withfriction gears, due to the fact that two of the springs are arrangedhorizontally side by side and occupy substantially the full widthbetween theJ standardly spacedjsills, and the other two springs areplaced one above the other below, so that the entire arrangement may ,bemounted within the usual space found on railway cars.

A follower 34 is mounted withinl the casting A at the front ends of thefour springs 30, 31. and said follower 31 having a pair of annularfianges slidably fitting within the cylinders 21 and Said annuY` larflanges serve to .form pockets to receive thtx rear ends of preliminary.springs 36 which are interposed between each set ot' friction elementsandthe follower 34. Retaining bolts 37-37 are used with each set offriction-elements to hold the latter in assembled position 4in the shockabsorbing mechanism,

is'evident that I'have provided a twinfrici `l/Vith the arrangementahorre. described, it

tion shock absorbing mechanism of exceedingly high capacity :and vwhichis at theisam'e time adapted to be mounted between stands, .ardly spacedsills ,andvis notvilof: excessive height.' 'By disposing'the cylindricalportions '26 and 27 of the casting A with respect' to the horizontalflange portions 28, as here!V 'sary space tor'eceive the side armsof thetwo" lyoke members 15 and'avoid undue `over-all '-1.'A In a frictiondraft width 'or'undue' height of the shock'absorb-` i .ing `mechanismand yoke: when the are" assembled;

'I claim: 'I

lrig

: nation with'` draft sills, front-and rear stops,adraw-bar,"andyokeactng means; of a .ing' a main spring resistance; thelatter' comprising four coils, .two-of 'said 'coils being arrangedhorizontally side by' i labore andthe other ztionedtwocoils." i 4- l lna draft-rigging, the combination vwith draft sills- 'spaced 'a' standarddistance 'i vertical twinlarranged frictionl shellsjwith friction shock`absorbing mechanism4 includsid'e and'occupying vsubstantially the vf ulll the sills, the other two .'co'ils being located one lbelow the rrst-fnienapart, of a twinfriction shock absorbing mechanism mounted betweensaidsil'lsfsaid' shock absorbing mechanism* including two cooperating'frictiony elements, and four main idth between" springsytwo of said mainsprings-heiligerranged'With-their axes parallel in a vertical plane andthe other two main' springs being lai-ranged parallel `with their axesin a hori- ...Zontal plane.

l 3.As an article of manufacture, a casting for friction shock absorbingmechanism, said casting' including a pair of friction shells arrangedside by side and a spring casing, said casing including upper and lowercylindric'al p'ortionsadapted to form two spring 'a' draw bar, of afriction shook absorbing vmechanism having a spring cage, said springcage'in its central portion ,being of substantially the same width lasthe spacing between saidsills'andi' having upper and lower sec- 'tionsof narrower width; and a two-part yoke adapted to connect the shockabsorbing mecl'iani'smj with the drm bar, .said two-part v-yokecomprisingnpper and lower horizontal -"loops'adapted `to` straddle saidupper and f lower portionsof said easing.

'l' In witness that l claim ,the following I have hereunto subscribed myname this 24th 'day gf May 191s. d

s f eeonsion 'ofrswrs witness; Y 1 Gro. F. GRAnAM? Y

